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0. G. PERKINS.

APPARATUS FOR TREATING UARBON FILAMENTS. No. 287,318. Patented Oct. 23,1888. I

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ATTEST: v IWENTUF N PETERS Phow-hlbogmpher Washmglnm n, 4:,

NITED STATES PATENT CFFICE.

CHARLES G. PERKINS, OF NEW YORK, N. Y., ASSIGNOR TO THE IMPERIALELECTRIC LIGHT COMPANY, OF SAME PLACE.

APPARATUS FOR TREATING CARBON FILAMENTS.

SPECIFICATION forming part of Letters Patent No. 287,318, dated October23, 188

' Application filed April 21, 1883; (No model To all whom it mayconcern:

Be it known that 1, CHARLES G. PERKINS,

a citizen of the United States, and a resident of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in an Apparatus for Treating Carbon Filaments, ofwhich the following is a specification.

My invention relates to an apparatus for manufiicturing the product ofthe decomposition of hydrocarbons, and for depositing the same on thesurfaces of carbon filaments placed within a heated chamber for finaltreatment. The first part of my invention consists of a carbonizing-boxprovided with a perforated plate resting against the wall of said box alittle above its base, and having a feed-pipe extending therefrom to asuitable distance above,where it is joined with an upright glass tubeprovided with an oil-feeding contrivance similar to the one for which Ihave applied for Letters Patent.

- The second part of my invention consists of a secondary glass tubeconnected with the upright tube. Said secondary tube enters the side ofa bulb provided with a tubular extension on the bottom thereof, saidextension having a stop-cock. The upper part of the bulb is providedwith a tubular extension provided with a gas-jet on the end thereof,said extension also having a tube projecting from the side thereof.

The third part of my invention consists of arranging a series ofperforated carbonized disks within a carbonizing-box and placing betweeneach disk a number of carbon filaments to receive their final treatment.In the drawings, Figure 1 represents a part section and elevation of theapparatus, showing the principal features of my invention. 2 representsa plan of the perforated metallic plate detached. Fig. 3 represents oneof the severalperforated carbon disks with a number of carbon filamentslaid thereon. Fig. 4 represents a modification.

Similar letters refer to similar part-s th roughout the several views,in which- A represents the wall of the gas-furnace.

B represents the muffie, into which the car- 50 bonizing'box C isplaced.

D is the perforated metallic plate, arranged within the carbon-box C.

- E are the perforated carbon disks, supported within thecarbonizing-box C by the plate D.

F is the upright metallic tube connected with the upright glass tube F,provided with an oil-feeding contrivance, G.

H is the secondary tube projecting from the ide of the glass tube F.Said tube II enters the side of the bulb I, provided with a tubularextension, K, having a stop-cock thereon.

L is the tubular extension arranged 011 the upper part of the bulb I.Said tubeL is provided with a gas-jet, M, on the upper end thereof, andis also provided with a projecting tube, N.

Mode of operation: The carbon filaments are first placed between theperforated carbon disks within the carbonizing-box, arranged within themuffle inclosed by the gas-furnace. The metallic tube is then connectedwith the glass tube having the oil-feeding mechanism. When the furnaceshall become sufficiently heated,the oil is allowed to drop to the baseof the carbon box, where it is immediately burned, and causes the fumesto arise therefrom and pass through the perforations of the metallicplate, thence through the perforations of the carbonized disks,where theproductof 11ydrocarbon is deposited upon the surfaces of the carbonfilament placed therein for final treatment. During this process the gasfrom the oil passes up the metallic pipe to the secondary tube, throughwhich it passes to the bulb or condenser, thence to the gas-jet,whereitis met by the ordinary coal-gas, and is ignited with it, the operationof which prevents the possibility of air entering thecarbon-box. A

The modification shows how the perforated carbon plates may be dispensedwith by hav ing hooks arranged on the wall of the carbonizing-box, uponwhich the carbon filaments are suspended when receiving their finaltreatment, as hereinbefore stated.

I am aware that paper strips have been placed between card-board and thewhole placed within a chamber, which was afterward heated to a hightemperature, thus carbonizing them. The above invention has no bear- 10oing on my inventiomfrom the fact that the paper, not being provided withperforations, would not admit of the proper deposit of hydrocarbonproduct on the carbon filaments. My invention is constructed fortreating carbon filaments.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. An apparatus for treating carbon filaments, consisting of theearbonizing-box 0, provided with perforated plate D, and metallic tubeE, substantially as shown and described.

2. In combination with a carbonizing-box for treating carbon filaments,the tube F, secondary tube H, bulb I, tubular extensions K and L,gas-jet M, and tube N, substantially as shown and described.

3. Broadly, in combination with an appara- :0 tus for treating carbonfilaments, a carbonizingbox provided with a metallic tube at its top anda perforated plate on the interior thereof, near its base, andsupporting a number of perforated carbonized disks.

York and State of New York, this 20th day of April, A.D. 1883.

CHARLES G. PERKINS.

\Vitnesses:

J. A. HURDLE, HENRY F. LIPPOLD.

